The Trustees Will Close Its Downtown Boston Office at 200 High St.

The Trustees, the Massachusetts conservation nonprofit formally known as The Trustees of Reservations, will close its Boston office at 200 High St. in the Financial District. The organization will not renew its lease when it expires in April 2027, the Boston Business Journal reported on Oct. 25, 2026.

According to the Business Journal, the group plans to shift resources to its regional offices and is looking at basing its headquarters at one of its own properties. It said the savings will go toward strengthening management of the more than 120 properties it owns across Massachusetts. The report did not give a dollar figure for the savings or name a future headquarters site.

Key Facts on The Trustees’ Boston Office Move

• Location: 200 High St., Boston, listed as the 4th floor on the group’s contact page.
• Timing: the lease expires in April 2027 and will not be renewed.
• Plan: resources move to regional offices, with a property-based headquarters under consideration.
• Stated purpose: savings go to managing its statewide properties.
• Leadership: Katie Theoharides, president and CEO since 2023, according to the Business Journal and the group’s leadership page.

A Short Stay Downtown for a 135-Year-Old Group

The Trustees was created by the Massachusetts Legislature in 1891, after landscape architect Charles Eliot proposed a nonprofit that would hold scenic and historic land for the public “just as a Public Library holds books,” according to the organization’s history as summarized by Wikipedia. Today it owns about 120 properties covering roughly 27,000 acres, all open to the public, and holds conservation restrictions on about 20,000 more acres.

Its main office was formerly at Long Hill, an estate in Beverly. It established a Boston headquarters in 2017. The group also runs an archives and research center in Sharon and the Doyle Conservation Center in Leominster. In 2014 it merged with the Boston Natural Areas Network, bringing that Boston group’s work under its umbrella. Closing the High Street office would end less than a decade of having its headquarters downtown.

How the Move Fits Boston’s Office Market

The decision lands in a soft downtown market. CBRE reported a downtown Boston office vacancy rate of 18.5% for the third quarter of 2026, with average asking rents of $66.12 per square foot and nearly 80% of leasing going to new Class A space, as covered in our Q3 downtown office market report. Those figures matter to City Hall too. Commercial, industrial and personal property made up 54% of Boston’s tax levy in fiscal 2026, according to the city’s property tax page.

Other downtown moves are running in the opposite direction. Harvard Book Store is preparing a new shop on Union Street, and several firms appeared in our roundup of October Boston business deals.

Our Take

This section is analysis by The Boston Report and is separate from the sourced reporting above.

For a land trust, the logic is easy to follow. Rent on a Financial District floor pays for desks downtown, while the group’s actual product, its reservations, gardens and historic houses, sits in towns across the state. Moving staff and leadership closer to those places is a bet that money spent on stewardship does more for members than an address downtown. It also mirrors a wider pattern in which tenants either trade up to new Class A space or leave downtown altogether, leaving older buildings with harder choices.

The open questions are practical ones. Public details so far do not say where the headquarters will land, how many employees work at High Street, or whether any jobs are affected. The group’s Boston programs, which grew with the Boston Natural Areas Network merger, are also worth watching, since a regional model could change how city work is staffed. For 200 High St., an April 2027 vacancy adds one more floor to a downtown market that is still working through high availability.

Sources

• Boston Business Journal: The Trustees to close Boston office, eyes property-based headquarters (Oct. 25, 2026)
• The Trustees: Leadership team
• The Trustees: Contact and customer service (200 High St. office)
• Wikipedia: The Trustees of Reservations
• City of Boston: FY27 property taxes
• CBRE: Downtown Boston Office Figures, Q3 2026